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1.发明申请公开(公告)号：US20170322432A1
公开(公告)日：2017-11-09
申请号：US15149795
申请日：2016-05-09
发明人： Zhibin Wang , Kewu Li , Rui Zhang , Youhua Chen , Yuanyuan Chen , Jinhua Li , Xinglai Liu , Changqing Yang
CPC分类号： G02F1/0131 , G02F1/0072 , G02F1/0136
摘要： The present invention relates to a Photoelastic Modulator (PEM), particularly to a novel polarized light modulator structure based on a photoelastic effect. The PEM, which controls driving voltages of two groups of piezoelectric actuators, is able to implement polarized light modulation having a relatively large optical path difference, and polarized light modulator having a fast modulation shaft moving circumferentially, and the PEM operates stably without a moving component. The present invention includes the piezoelectric actuators, a light pass crystal and a driver controller. Two light pass faces of the light pass crystal are parallel regular octagons directly facing each other, and identical rectangles are formed by side faces of the light pass crystal. The piezoelectric actuators are in soft connection with middle positions of the rectangles by connection rubber layers. The width directions of the piezoelectric actuators are consistent with the direction of the light pass thickness of the light pass crystal, and the widths are slightly larger than the light pass thickness. The piezoelectric actuators are connected with electric output ends on the driver controller by electric adapters. This aspect is mainly applied to PEMs.
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公开(公告)号：US10036903B2
公开(公告)日：2018-07-31
申请号：US15149795
申请日：2016-05-09
发明人： Zhibin Wang , Kewu Li , Rui Zhang , Youhua Chen , Yuanyuan Chen , Jinhua Li , Xinglai Liu , Changqing Yang
CPC分类号： G02F1/0131 , G02F1/0072 , G02F1/0136
摘要： The present invention relates to a Photoelastic Modulator (PEM), particularly to a novel polarized light modulator structure based on a photoelastic effect. The PEM, which controls driving voltages of two groups of piezoelectric actuators, is able to implement polarized light modulation having a relatively large optical path difference, and polarized light modulator having a fast modulation shaft moving circumferentially, and the PEM operates stably without a moving component. The present invention includes the piezoelectric actuators, a light pass crystal and a driver controller. Two light pass faces of the light pass crystal are parallel regular octagons directly facing each other, and identical rectangles are formed by side faces of the light pass crystal. The piezoelectric actuators are in soft connection with middle positions of the rectangles by connection rubber layers. The width directions of the piezoelectric actuators are consistent with the direction of the light pass thickness of the light pass crystal, and the widths are slightly larger than the light pass thickness. The piezoelectric actuators are connected with electric output ends on the driver controller by electric adapters. This aspect is mainly applied to PEMs.
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